Auxiliary barrel for breech-loading guns.



" PATENTED DEC. 1, 1903. V.' 0. TASKER.

AUXILIARY BARREL FOR BREEGH LOADING GUNS.

H0 MODEL.w

AYPLIOATION FILED FEB. 21, 1903.

2 SHEETS-SHEET 1.

. Allfome No. 745,464; PATENTED DEC. 1, 1903 v. c. TASKER. AUXILIARYBARREL FOR BREEGH LGADING GUNS;

APPLICATION FILED FEB. 21. 1903.

NO MODEL.

2 SHEETS-SEER! 2.

u A Alfomey NlTED "DATES Patented December 11-,- 1903.

ATENT me VERNON o. TASKER, or WASHINGTON, DISTRICT or 'ooLUMBI'A,.AssIeon PORATION OF VIRGINIA.

AUXILIARY BARREL FOR BREECH-LOADING SPECIFICATION forming part ofLetters Patent No. 745,464, dated Decemberl, 1903. Application filedFebruary 21, 190.8. derial No. 144,436. (No model) To all whom it mayconcern:

Be it known that I, VERNON O. TASKER, a citizen of the United States,residin g at Wash I ington, District of Columbia, have invented icertain new and useful Improvements in Auxiliary BarrelsforBreech-Loading Guns; and I do hereby declare the following to be afull,

clear, andeXact-description of the invention,

, such as will enable others skilled in the art to rewhich it appertainsto make and use the same. This invention relates'to auxiliary barrels 4for breech-loading guns, or, as they are usually termed, suboaliberdevices; and it consists-in the construction hereinafter set '15, forth.7

The present invention isespeciallydesig'ned for a-gun using fixedammunition or-a. car- Bridge and there is'iio tapered-portion of .the

large gun on which to obtairr'a bearing for no one of the adapters.Henceit is necessary to provide some means othei t an expansion pre- atthe rear of the snbcaliber device-to vvent the latter from jarringforward.

In the annexeddrawings, Figure 1 represents in section andside elevationa portion of a gun and. the device within the gun; Fig.

2, an enlarged sectional View of the breechhoop; Figs. 3 and ,4, end.and sectional views of the'adapter ring; Figs. 5 and 6,end, secotional,and partialdetail'of the adapter-sleeve;

Fig. 7, a sectional view-0f a modification of the breech-hoop; Fig. 8, aview ofthe adapterscrew.

V In the drawingsjthelet-ter A indicates the g5, auxiliaryburrelorgsnbcaliber gun,which may be built up in'-tlieiusual way,consisting of the tube a, the jacket a, and the breech-hoop B. Thisbarrel Ais provided on its exterior surface with two sets ofscrew-threads:a. a

40. of the same pitch and direction, one set, a being near the muzzle aand the other set,

a being about the middle a -of the subcaliber gun. Engaging the frontthreads a? is a front adapter 0, whichfits on its outer rim 5- c thebore of the large or main gun.

ing the threads a isthe middle adapter D,

on its outer rim d fitting the bore of the large gun. The rear end ofthe tube a has the usual breech-hoop 3, upon which is placed a steelring E "having the flange-E..- .flhis ring Engag- 1 large or main gun,thus firmly holding the ving the subcslibergun from being jarred forwardwhen the gun is fired.

is provided with a number of holes e and at one side with a screw-seat6. This screwseat e runs obliquely fromone'face, e of the ringoutwardly'to the outer periphery of the ring and has a threaded portione at the face e and a smooth portion i At the inner and upper end e ofthe smooth portion e of the seat e there is a slit or open is within thesmooth portion 6 of this seat, the point 9 of'the screw passing throughthe slit'or opening e and pressing against the 7::

tongue f of the. sleeve F.

The subcaliber gun, with the several adapters, is put in position asshown in Fig. 1. After they are .duly placed and adjusted by turning thebarrel within the adapters the screw G is turned inwardly, forcing thepoint g thereof through the slit or opening ,6. against the tongue f ofthe sleeve F and binding the tongue against the inner face or bore ofthe subcaliber gun in place. The flange E ofthe ring E is fitted to theface of the larger gun around the inner end of the bore, occupying theplace where the rim of the cartridge-case fits, and as a mushroomgas-check is not used with a gun of this caliber the flange may be usedand it prevents any forward jarring of the subcaliber gun. I

If desired, the ring E may be omitted and the breech-hoop B- be madewith the flange and having the screw-seat for-the adapterscrew G. a .1;

- Having thusdescribed my invention, what I'claim is- 1. Meansofsecuring a subcaliber gun in place provided with a. variable adjustmentfor holding thesubc'aliber gun tightly within the larger gun, andadditional means .for prevent- 2. Means of securing a subcaliber gun inl place provided with a variable adjustment for holding the subcalibergun tightly in place within the larger gun, and a flange fitting theface of the larger gun to prevent the subcaliber gun from being jarredforward when the gun is fired. V

3. Means of securing a.- subeal'iber gun in place and preventing itsbeing jarred forward when the gun is fired provided with a. slitted ringhaving a tongue onthe outside, a screw for bearing against such tongue,and a. flange on the outer end.

4. The combination of the ring, E, having the slit or opening, e, andthe flange, E, adapted to-the face of a large gun; the screw, G, held inthe ring, E, and passing through the slit or opening, a; and the sleeve,F, hav- =in the ton ue, 7 cornin over the slit or b b u 3 (1 opening, 6,of the ring, E.

In testimony-whereof I aiffix my signature in presence of two witnesses.

- VERNON O. TASKER.

Witnesses:

G. T. SAMPSON, GEO. T. PARKER.

